{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0x39c66401239dc784094a674b7a1e7ec880142ba99f7e21b444be077a59fb656a",
    "signature": "0xbda627a9a61dc98e69d505b2c408d2f51e376e6cc66d20e73115f5cb0bfe6fe52347cec6cd1d8b0157dedeba2763e832ab3aa60ea235826a1ecc45aed58db0101c",
    "signer": "0x6440Dd7ce5eE2e610F909B08098D39f89250637f",
    "userId": "503764788"
  }
}